Theophilus aendt



(No Model.) I r v T; ARNDT'.

v 7 AUTOMATIC AILWAY SIGNAL. 4 N0. 289,953; Patented Dec. 11, 1883.

WITNESSES: I INVBNTOR:

S BY%% ATTORNEYS;

UNITE STATES PATENT OFFICE.

THEOPHILUS ARNDT, OF FLQRIN, ASSIGNOR OF ONE-HALF TO HENRY H. HEISE, OF COLUMBIA, PENNSYLVANIA.

AUTOMATIC RAILWAY-SIGNAL.

SPECIFICATION forming part of Letters Patent No. 289,953, dated December 11, 1883,

Application filed June 11. 1883. (No model.) I

To all whom it may concern:

Be 1t known that I, THEOPHILUS ARNDT,

a citizen of the United States, residing at Florin, in the county of Lancaster and State of Pennsylvania, have invented a new and useful Improvement in Automatic Railway- Signals; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to letters marked on the accompanying drawings, in which Figure 1 is a side view of a locomotive with my improvements. Fig. 2 is a rear elevation of my improvement, partly in section, and Fig. 3 is a detail view. Fig. 4 is a detailed sectional view on line 3 3 of Fig. 2.

My invention relates to improvements in automatic railway-signals; and it consists in the peculiar construction-and arrangement of the parts, as hereinafter more fully set forth, and pointed out in the claims.

In the accompanying drawings, a a represent the two rails of a railway-track, and b represents'a rail sloped at its ends and arranged near one of the rails of the track and above it, so as to be just cleared by the cowcatcher, and preferably between the rails, as shown in the drawings.

0 represents a locomotiveof the usual form, provided with a steam-drum, d, having a steam-whistle, e, attached thereto, the latter being secured to a vertical spring-rod, h, bent downward, preferably at its upper end, and secured to one end ofthe inner one of the cranks i of the horizontal double-crank shaft 7c. The doublecrank shaft is is journaled'in the bracket Z, fixed to the frame of the cab. The outer crank, i, is provided at its end with a threaded vertical rod, m, which passes through a hole, n, in the outer end of the stayplate or bracket 0, secured to the frame of the cab, and thence passes near its lower end through the right-angular projection p, se-

, the ordinary construction.

rying the wheel r, rises and falls in passing The plate q, carover the sloped rail 11 in a recess, 8, made in one side of the plate t.

t represents a plate secured to the frameof the locomotive over the plate (1,130 hold it in place, and at the same time to permit the plate q to slide up and down freely in the re-,-

cess s.

it represents a thimble retained upon the lower end of the vertical rod m by a nut, 0,

below the angular projection p.- The upper end of thethimble a is provided with a head,

encircles the lower end of the rod m and lies between the head of the thimble and the nut a for adjusting the tension of the spring. WVhen desired, the rod m may be raised high enough by adjusting the upper nut a, to avoid operating the whistle by the rise and fall of the plate (1 and wheel r as they pass over rail'b.

WVhat I claim as my invention is- 1. The combination, with the sloped rail 1), elevated above the track, and steam-whistle e, of the double-crank shaft i t k, bracket 0, threaded rod m, spiral spring b, 'thimble u, nuts a, and plate g, carrying the wheel r, substantially as described, and for the purpose set forth.

2. The combination, with the steam-whistle e, connected with the double-crank shaft 1' i k, of the stay-platen, threaded rod m, carrying spiral spring I), thimble a, plate q, having wheel 1- at its lower end, and plate t, substantially as described, and for the purpose set forth. 7

THEOPHILUS ARNDT.

Witnesses:

F. P. D. MILLER, EPHRAIM F. ARNDT. 

